2.5 sec in total
636 ms
1.7 sec
148 ms
Welcome to nbn.org.uk homepage info - get ready to check Nbn best content for United Kingdom right away, or after learning these important things about nbn.org.uk
The National Biodiversity Network (NBN) is a collaborative venture in the United Kingdom, which is committed to making biodiversity information available through the internet via the NBN Atlas - the d...
Visit nbn.org.ukWe analyzed Nbn.org.uk page load time and found that the first response time was 636 ms and then it took 1.8 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 35% of websites can load faster.
nbn.org.uk performance score
name
value
score
weighting
Value4.5 s
14/100
10%
Value7.2 s
5/100
25%
Value5.2 s
60/100
10%
Value330 ms
75/100
30%
Value0
100/100
15%
Value7.8 s
44/100
10%
636 ms
167 ms
831 ms
167 ms
42 ms
Our browser made a total of 59 requests to load all elements on the main page. We found that 58% of them (34 requests) were addressed to the original Nbn.org.uk, 5% (3 requests) were made to Malsup.github.com and 5% (3 requests) were made to Malsup.github.io. The less responsive or slowest element that took the longest time to load (831 ms) belongs to the original domain Nbn.org.uk.
Page size can be reduced by 614.5 kB (44%)
1.4 MB
766.8 kB
In fact, the total size of Nbn.org.uk main page is 1.4 MB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 30% of websites need less resources to load. Javascripts take 671.9 kB which makes up the majority of the site volume.
Potential reduce by 34.4 kB
HTML content can be minified and compressed by a website’s server. The most efficient way is to compress content using GZIP which reduces data amount travelling through the network between server and browser. This page needs HTML code to be minified as it can gain 7.6 kB, which is 17% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 34.4 kB or 75% of the original size.
Potential reduce by 23.1 kB
Image size optimization can help to speed up a website loading time. The chart above shows the difference between the size before and after optimization. Nbn images are well optimized though.
Potential reduce by 532.8 kB
It’s better to minify JavaScript in order to improve website performance. The diagram shows the current total size of all JavaScript files against the prospective JavaScript size after its minification and compression. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 532.8 kB or 79% of the original size.
Potential reduce by 24.2 kB
CSS files minification is very important to reduce a web page rendering time. The faster CSS files can load, the earlier a page can be rendered. Nbn.org.uk needs all CSS files to be minified and compressed as it can save up to 24.2 kB or 79% of the original size.
Number of requests can be reduced by 26 (50%)
52
26
The browser has sent 52 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Nbn. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 14 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.
nbn.org.uk
636 ms
GetCSS.aspx
167 ms
jquery-1.7.js
831 ms
jquery.hoverIntent.minified.js
167 ms
chili-1.7.pack.js
42 ms
jquery.mousewheel-3.0.4.pack.js
165 ms
jquery.fancybox-1.3.4.pack.js
332 ms
GetResource.ashx
367 ms
chili-1.7.pack.js
41 ms
jquery.cycle.all.js
22 ms
jquery.easing.1.3.js
41 ms
jquery.cycle.all.js
38 ms
jquery.easing.1.3.js
39 ms
WebResource.axd
338 ms
ScriptResource.axd
290 ms
ScriptResource.axd
248 ms
buttons.js
30 ms
GetCSS.aspx
254 ms
GetCSS.aspx
366 ms
ga.js
109 ms
nav-bg.png
347 ms
logo.png
98 ms
nav-drop.png
335 ms
arrow-left.png
90 ms
arrow-right.png
91 ms
David-Fenwick.jpg
166 ms
Small-red-damselfly-(Erythromma-viridulum-m)-copyright-Pam-Taylor.jpg
175 ms
3-Earls-Hill-Shropshire-WT-Pete-Boardman.JPG
340 ms
Kew-Gardens.jpg
225 ms
Climate-opportunists-a-threat-to-UK-biodiversity-a.aspx
173 ms
forest03-squared.jpg
170 ms
Oz-250-x-250.jpg
333 ms
NZ-Flatworm.jpg
258 ms
pbynbn100-wide.png
258 ms
Facebook.aspx
266 ms
Twitter.aspx
315 ms
black-trans.png
238 ms
arrow-green.png
237 ms
share-data.jpg
321 ms
leaf-square.jpg
481 ms
iRecord.png
400 ms
shade2.png
320 ms
getAllAppDefault.esi
18 ms
__utm.gif
15 ms
getSegment.php
158 ms
checkOAuth.esi
5 ms
t.dhj
7 ms
pixel
53 ms
t.dhj
12 ms
cm
45 ms
pixel
20 ms
12 ms
s-3271.xgi
11 ms
hbpix
37 ms
adxmapping.php
77 ms
xrefid.xgi
5 ms
33 ms
pixel
23 ms
2981
32 ms
nbn.org.uk accessibility score
ARIA
These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.
Impact
Issue
ARIA input fields do not have accessible names
Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
Background and foreground colors do not have a sufficient contrast ratio.
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Heading elements are not in a sequentially-descending order
Names and labels
These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.
Impact
Issue
Links do not have a discernible name
nbn.org.uk best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Includes front-end JavaScript libraries with known security vulnerabilities
Ensure CSP is effective against XSS attacks
General
Impact
Issue
Detected JavaScript libraries
Page has valid source maps
nbn.org.uk SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
Mobile Friendly
Make sure your pages are mobile friendly so users don’t have to pinch or zoom in order to read the content pages. [Learn more](https://developers.google.com/search/mobile-sites/).
Impact
Issue
Document uses legible font sizes
Tap targets are not sized appropriately
EN
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Nbn.org.uk can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Nbn.org.uk main page’s claimed encoding is utf-8. Use of this encoding format is the best practice as the main page visitors from all over the world won’t have any issues with symbol transcription.
nbn.org.uk
Open Graph description is not detected on the main page of Nbn. Lack of Open Graph description can be counter-productive for their social media presence, as such a description allows converting a website homepage (or other pages) into good-looking, rich and well-structured posts, when it is being shared on Facebook and other social media. For example, adding the following code snippet into HTML <head> tag will help to represent this web page correctly in social networks: